Do 85% of the world’s population practice a religion?

We don’t usually do god on More or Less, but one listener got in touch to ask us to investigate a stat used by an Anglican priest on a BBC radio programme.

Speaking on the “Thought for the Day” slot, Reverend Lucy Winkett said that around 85% of the world's population practice a religion.

Is this true? We speak to Conrad Hackett, from the Pew Research Center, and the person whose research is the source for the claim.

Presenter: Tim Harford Producer: Natasha Fernandes Series producer: Tom Colls Production co-ordinator: Katie Morrison Sound mix: Nigel Appleton Editor: Richard Vadon

Can we be sure that thousands of millionaires are leaving the UK? How much do asylum seekers cost the state? Who will win a geeky bet on private school pupil numbers? What does a string quartet teach us about the woes of the National Health Service?

Tim Harford investigates some of the numbers in the news.

Presenter: Tim Harford Producers: Caroline Bayley, Natasha Fernandes and Bethan Ashmead-Latham Series producer: Tom Colls Production co-ordinator: Katie Morrison Sound mix: Sarah Hockley Editor: Richard Vadon

Big stakes poker player and elections analyst Nate Silver is no stranger to a calculated risk.

In his new book, On The Edge, he makes the case that people willing to take massive calculated risks are winning in the modern economy.

Tim Harford talks to Nate about the mindset that’s driving hedge fund managers, crypto true-believers and silicon valley investors.

Presenter: Tim Harford Producer: Beth Ashmead Latham Series producer: Tom Colls Production co-ordinator: Katie Morrison Sound mix: Nigel Appleton Editor: Richard Vadon

Do illegal migrants receive more in benefits than pensioners? Was Energy Secretary Ed Miliband right to celebrate a “record breaking” renewable energy auction? Is one divided by zero infinity? Why don’t we spend more on evidence that government spending works? And how long does it actually take to turn around an oil tanker?

Tim Harford investigates some of the numbers in the news.

Presenter: Tim Harford Reporter: Charlotte McDonald Producers: Natasha Fernandes, Bethan Ashmead-Latham and Nathan Gower Series producer: Tom Colls Production co-ordinator: Katie Morrison Sound mix: Gareth Jones Editor: Richard Vadon

Donald Trump wants new tariffs on goods coming into the US, describing them as a tax on other countries. The Democrats are no stranger to trade tariffs themselves, with Joe Biden having added them to numerous goods coming into the US from China.

We talk to Erica York from the Tax Foundation about how tariffs work and who ends up paying for them.

Presenter: Tim Harford Producers: Kate Lamble and Beth Ashmead Latham Series producer: Tom Colls Production co-ordinator: Katie Morrison Sound mix: Steve Greenwood Editor: Richard Vadon

Do half of children in Wales have special educational needs? Are permanent exclusions at the highest ever level in England? Labour are talking about a £22bn black hole. Is that a new black hole in the finances? Are there more Ghanaian nurses in the UK than in Ghana? Can you divide one by zero?

Tim Harford looks at some of the numbers in the news.

Presenter: Tim Harford Reporters: Kate Lamble and Nathan Gower Producer: Beth Ashmead Latham Series producer: Tom Colls Production co-ordinator: Katie Morrison Sound mix: Andy Fell Editor: Richard Vadon

The Cuban government has announced that their population has fallen by 10% in two years – just days after a demographer on the Caribbean island suggested an even bigger fall.

But which is the right number, and why are so many people leaving?

We speak to Dr Emily Morris from University College London and Dr Jorge Duany from the Cuban Research Institute at Florida International University.

Presenter: Kate Lamble Producer: Beth Ashmead Latham Series producer: Tom Colls Production co-ordinator: Katie Morrison Sound mix: Sue Maillot Editor: Richard Vadon

The claim we all swallow 5.5 grams of microplastic each week – the same as the weight of a credit card – has been repeated by charities, newspapers and the World Economic Forum.

But when you understand how this number was calculated, and the range of possible answers for the amount of plastic you eat, you might not want to repeat it yourself.

Professor Jamie Woodward from the University of Manchester explains what’s what.

Presenter: Kate Lamble Producer: Beth Ashmead Latham Researcher: Ajai Singh Series producer: Tom Colls Production co-ordinator: Katie Morrison Sound mix: Giles Aspen Editor: Richard Vadon

Recent reports claimed the average global mark-up, the difference between the price of production and the price that product is sold for, rose from 7% in 1980 to 59% by 2020.

So is this true? Are some companies choosing to charge us more than ever for their products?

We investigate the accuracy of these claims, and which companies are responsible with the help of Jan Eeckhout a Professor of Economics at Pompeu Fabra University in Barcelona

Presenter: Kate Lamble Producer: Beth Ashmead Latham Production co-ordinator: Katie Morrison Sound mix: Neil Churchill Editor: Richard Vadon

Canadian psychologist and culture war commentator Jordan Peterson says planet Earth has got 20% greener in the last 20 years.

But satellite data tells a different story.

We investigate the correct number, with the help of Dr Chi Chen, from Rutgers University in the US.

Presenter: Kate Lamble Series producer: Tom Colls Production co-ordinator: Brenda Brown Sound mix: Giles Aspen Editor: Richard Fenton-Smith